initial commit-moved from vulkan_guide

third_party/SDL/src/audio/coreaudio/SDL_coreaudio.h

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+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2023 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+#include "../../SDL_internal.h"
+
+#ifndef SDL_coreaudio_h_
+#define SDL_coreaudio_h_
+
+#include "../SDL_sysaudio.h"
+
+#if !defined(__IPHONEOS__)
+#define MACOSX_COREAUDIO 1
+#endif
+
+#if MACOSX_COREAUDIO
+#include <CoreAudio/CoreAudio.h>
+#else
+#import <AVFoundation/AVFoundation.h>
+#import <UIKit/UIApplication.h>
+#endif
+
+#include <AudioToolbox/AudioToolbox.h>
+#include <AudioUnit/AudioUnit.h>
+
+/* Things named "Master" were renamed to "Main" in macOS 12.0's SDK. */
+#if MACOSX_COREAUDIO
+#include <AvailabilityMacros.h>
+#ifndef MAC_OS_VERSION_12_0
+#define kAudioObjectPropertyElementMain kAudioObjectPropertyElementMaster
+#endif
+#endif
+
+/* Hidden "this" pointer for the audio functions */
+#define _THIS SDL_AudioDevice *this
+
+struct SDL_PrivateAudioData
+{
+    SDL_Thread *thread;
+    AudioQueueRef audioQueue;
+    int numAudioBuffers;
+    AudioQueueBufferRef *audioBuffer;
+    void *buffer;
+    UInt32 bufferOffset;
+    UInt32 bufferSize;
+    AudioStreamBasicDescription strdesc;
+    SDL_sem *ready_semaphore;
+    char *thread_error;
+#if MACOSX_COREAUDIO
+    AudioDeviceID deviceID;
+    SDL_atomic_t device_change_flag;
+#else
+    SDL_bool interrupted;
+    CFTypeRef interruption_listener;
+#endif
+};
+
+#endif /* SDL_coreaudio_h_ */
+
+/* vi: set ts=4 sw=4 expandtab: */